用ajax发送请求时报错，异常如下，求解决方法

 java.lang.IllegalStateException: Optional long parameter 'cartId' is present but cannot be translated into a null value due to being declared as a primitive type. Consider declaring it as object wrapper for the corresponding primitive type.

	at org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver.handleNullValue(AbstractNamedValueMethodArgumentResolver.java:185)

	at org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver.resolveArgument(AbstractNamedValueMethodArgumentResolver.java:92)

	at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:75)

	at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:156)

	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:117)

	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)

	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)

	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)

	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)

	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)

	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)

	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)

	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

	at net.inno.commons.filter.SetOriginRequestUriFilter.doFilter(SetOriginRequestUriFilter.java:41)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)

	at net.inno.commons.filter.SetCharacterEncodingFilter.doFilterInternal(SetCharacterEncodingFilter.java:92)